[SCSI] libfc: register FC4 features with the FC switch

Customers and certification tests have pointed out that we don't
show up on the switch management software as an initiator.

On some MDS switches 'show fcns database' command shows libfc
initiators as 'fcp' not 'fcp:init' like other initiators.

On others switches, I think the switch gets the features by doing a PRLI,
but it may be only certain models or under certain configurations.

Fix this by registering our FC4 features with the RFF_ID CT request
after local port login and after the RFT_ID.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/libfc/fc_lport.c b/drivers/scsi/libfc/fc_lport.c
index d3aec19..1bcc5e1 100644
--- a/drivers/scsi/libfc/fc_lport.c
+++ b/drivers/scsi/libfc/fc_lport.c
@@ -122,6 +122,7 @@
 	[LPORT_ST_RSNN_NN] =  "RSNN_NN",
 	[LPORT_ST_RSPN_ID] =  "RSPN_ID",
 	[LPORT_ST_RFT_ID] =   "RFT_ID",
+	[LPORT_ST_RFF_ID] =   "RFF_ID",
 	[LPORT_ST_SCR] =      "SCR",
 	[LPORT_ST_READY] =    "Ready",
 	[LPORT_ST_LOGO] =     "LOGO",
@@ -1034,6 +1035,7 @@
 			case LPORT_ST_RSNN_NN:
 			case LPORT_ST_RSPN_ID:
 			case LPORT_ST_RFT_ID:
+			case LPORT_ST_RFF_ID:
 			case LPORT_ST_SCR:
 			case LPORT_ST_DNS:
 			case LPORT_ST_FLOGI:
@@ -1070,7 +1072,7 @@
 
 	mutex_lock(&lport->lp_mutex);
 
-	if (lport->state < LPORT_ST_RNN_ID || lport->state > LPORT_ST_RFT_ID) {
+	if (lport->state < LPORT_ST_RNN_ID || lport->state > LPORT_ST_RFF_ID) {
 		FC_LPORT_DBG(lport, "Received a name server response, "
 			     "but in state %s\n", fc_lport_state(lport));
 		if (IS_ERR(fp))
@@ -1101,6 +1103,9 @@
 			fc_lport_enter_ns(lport, LPORT_ST_RFT_ID);
 			break;
 		case LPORT_ST_RFT_ID:
+			fc_lport_enter_ns(lport, LPORT_ST_RFF_ID);
+			break;
+		case LPORT_ST_RFF_ID:
 			fc_lport_enter_scr(lport);
 			break;
 		default:
@@ -1235,6 +1240,10 @@
 		cmd = FC_NS_RFT_ID;
 		size += sizeof(struct fc_ns_rft);
 		break;
+	case LPORT_ST_RFF_ID:
+		cmd = FC_NS_RFF_ID;
+		size += sizeof(struct fc_ns_rff_id);
+		break;
 	default:
 		fc_lport_error(lport, NULL);
 		return;
@@ -1317,6 +1326,7 @@
 	case LPORT_ST_RSNN_NN:
 	case LPORT_ST_RSPN_ID:
 	case LPORT_ST_RFT_ID:
+	case LPORT_ST_RFF_ID:
 		fc_lport_enter_ns(lport, lport->state);
 		break;
 	case LPORT_ST_SCR: